INJORA 40.3:1 Low Range Transmission Gear Set for TRX4M 1/18 RC Crawler – Stainless Steel

The INJORA 40.3:1 low range transmission gear set provides a stainless steel upgrade for the TRX4M line of 1/18 scale RC crawlers. Designed for models like the Defender, Bronco, K10 High Trail, and F150, this set includes all necessary transmission gears and an 11-tooth motor pinion to achieve an ultra-low reduction ratio aimed at maximizing rock-climbing power and torque.

Is This Gear Set Compatible with My TRX4M Model?

Yes, this low range transmission gear set is specifically designed for the 1/18 scale TRX4M chassis, including the Defender, Bronco, K10 High Trail, and F150 bodies. It serves as a direct upgrade for those crawling platforms, offering a significant reduction ratio for improved low-speed control and climbing ability.

Gear Set Details at a Glance

Common Queries from RC Crawler Owners

Do I need to grease the gears?

Yes, the manufacturer strongly recommends greasing the gears before installation to ensure smooth operation and longevity. The included note explicitly reminds users not to forget this step.

What benefits does the 40.3:1 ratio provide?

This ultra-low reduction ratio is intended to deliver maximum torque and control during rock-crawling, allowing for slower, more precise movements over obstacles. It enhances the vehicle's ability to climb steep terrain without sacrificing stability.

Is this set made of stainless steel?

Yes, the gears are crafted from stainless steel, which offers rust resistance and enhanced wear resistance compared to standard materials. The CNC machining further increases durability and strength for long service life.

This upgrade is a straightforward way to improve crawling performance on your TRX4M. Remember to lubricate the gears as directed for best results. The set comes with all the parts needed for a complete transmission gear swap, including the motor pinion, so you can get back on the rocks quickly.